4. The Structure of Proteins: Primary Structure

• The Function of a Protein Depends on Its Amino Acid Sequence

• Protein Structure Is Studied Using Methods That Exploit Protein Chemistry

• Mass Spectrometry Provides Information on Molecular Mass, Amino Acid Sequence, and Entire Proteomes

• Small Peptides and Proteins Can Be Chemically Synthesized

• Amino Acid Sequences Provide Important Biochemical Information

• Protein Sequences Help Elucidate the History of Life on Earth

• BOX 3-2 Consensus Sequences and Sequence Logos